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Finding the Fourth Proportional to 77,064.27, 115,596.40 and 21,660.27

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Solution

The fourth proportional to 77,064.27, 115,596.40 and 21,660.27 is: 32,490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,064.27 : 115,596.40 = 21,660.27 : x
  2. Step 2: Convert to fraction form
    77,064.27/115,596.40 = 21,660.27/x
  3. Step 3: Cross multiply
    77,064.27x = 115,596.40 × 21,660.27
  4. Step 4: Simplify right side
    77,064.27x = 2,503,849,235.03
  5. Step 5: Solve for x
    x = 2,503,849,235.03/77,064.27
  6. Step 6: Final answer
    x = 32,490.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.